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      06-24-2013, 07:26 AM   #11
SM335i
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Drives: Car
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Quote:
Originally Posted by Efthreeoh View Post
That stick that is in the coolant tank has a sytrofoam float with electrical contacts on it that measures the level of the liquid in the tank. When it gets too low, the float bottoms out, the electrical connection is made and triggers the warning light.
Thank you for the info!

I filled it up, it took about 12 oz of coolant mix
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